I just looked through some old notes; in addition to the .22-250, I also tried 2520 in .250 Savage and .308. However, I cut way back on having many different powders on hand some time ago. H4985 replaced 2520 for my purposes for use in several cartridges. Regardless, there's nothing wrong with 2520, especially in times like these. Five pounds is enough to do a lot of experimentation.